Calculator of the Factorial of a Number

Instructions: You can use this factorial calculator to compute the factorial of an integer number \(n\).

Type the integer:

More this factorial calculator

There are many Math contexts in which the use of factorials is relevant, especially in the field of Probability and Combinatorial, as the factorial of a number is related with the number of was \(n\) objects can be organized.

The formula for \(n!\) is:

\[n! = n \cdot (n-1) \cdot (n-2) \cdots 2 \cdot 1\]

Notice that when \(n\) becomes large, the calculation of \(n!\) is more computationally involved. Typically, for large values of \(n\), you would use Stirling's Approximation , which provide a very accurate approximation.

You can also check our algebra calculators section to find more things to solve and calculate.

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